ADOPTED LEVELS, GAMMAS for 93Kr

Author: Coral M. Baglin |  Citation: Nucl. Data Sheets 112, 1163 (2011) |  Cutoff date: 15-Dec-2010 

 Full ENSDF file | Adopted Levels (PDF version) 


Q(β-)=8484 keV 9S(n)= 3438 keV 4S(p)= 15192 keV 8Q(α)= -7569 keV 5
Reference: 2012WA38

References:
  A  93Br β- decay  B  94Br β-n decay
  C  252Cf SF decay 

General Comments:

For isotope shift and hfs data from collinear fast beam laser spectroscopy, see 1995Ke04.

Q-value: Note: Current evaluation has used the following Q record

Q-value: Q(β-), S(n), S(p), Q(α): from 2009AuZZ (cf. 8600 100, 3300 100, 14730 110, -7250 310 (systematics), respectively, from 2003Au03).

Q-value: Q(β-n)=2567 7 (2009AuZZ) (cf. 2680 100 (2003Au03)).










E(level)
(keV)
XREFJπ(level) T1/2(level)E(γ)
(keV)
I(γ)M(γ)Final Levels
     0ABC 1/2+ 1.286 s 10 
% β- = 100
% β-n = 1.95 11
     
   117.45 15 A C (3/2+)     117.4 2 
  100
(M1)
     0
1/2+
   354.85 25 A C (7/2+) 10 ns 2    237.4 2 
  100
(E2)
   117.45
(3/2+)
   359.46 15 A   (3/2+,5/2+)     242.0 2 
  359.4 2 
  100 13 
    6.2 12 
(M1(+E2))

   117.45
     0
(3/2+)
1/2+
   710.10 18 A   (3/2,5/2+)     349.9 5 
  592.7 4 
  710.2 2 
   18 11 
   54 13 
  100 9 



   359.46
   117.45
     0
(3/2+,5/2+)
(3/2+)
1/2+
   805.40 20 A       446.0 2 
  687.9 2 
  100 13 
   78 6 


   359.46
   117.45
(3/2+,5/2+)
(3/2+)
   983.3 11   C (11/2+)     628.4
  100

   354.85
(7/2+)
  1029.0 4 A       669.5 3 
  100

   359.46
(3/2+,5/2+)
  1325.9 8 A       966.4 7 
  100

   359.46
(3/2+,5/2+)
  1337.1 7 A       977.6 6 
  100

   359.46
(3/2+,5/2+)
  1517.0 15   C (15/2+)     533.7
  100

   983.3
(11/2+)
  2401.8 18   C (19/2+)     884.8
  100

  1517.0
(15/2+)
  3199.9 21   C (23/2+)     798.1
  100

  2401.8
(19/2+)

E(level): From least-squares fit to Eγ, assigning 1 keV uncertainty to Eγ data for which authors did not state the uncertainty.

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Band Transitions:

E(level)
(keV)
Jπ(level) T1/2(level)E(γ)I(γ)M(γ)Final Levels
Band 1 - π=+ SEQUENCE.
     0 1/2+ 1.286 s 10 
% β- = 100
% β-n = 1.95 11
     
   117.45 15  (3/2+)     117.4 2 
  100
(M1)
     0
1/2+
   354.85 25  (7/2+) 10 ns 2    237.4 2 
  100
(E2)
   117.45
(3/2+)
   983.3 11  (11/2+)     628.4
  100

   354.85
(7/2+)
  1517.0 15  (15/2+)     533.7
  100

   983.3
(11/2+)
  2401.8 18  (19/2+)     884.8
  100

  1517.0
(15/2+)
  3199.9 21  (23/2+)     798.1
  100

  2401.8
(19/2+)

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Additional Gamma Data:













E(level)
(keV)
Jπ(level)T1/2(level)E(γ)
(keV)
MultipolarityConversion
Coefficient
Additional Data
   117.45 (3/2+)     117.4 2 (M1)0.0832α=0.0832
   354.85 (7/2+) 10 ns 2    237.4 2 (E2)0.0388B(E2)(W.u.)=2.9 6, α=0.0388
   359.46 (3/2+,5/2+)     242.0 2 (M1(+E2))0.024α=0.024 12

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Additional Level Data and Comments:

E(level)Jπ(level)T1/2(level)Comments
     01/2+ 1.286 s 10 
% β- = 100
% β-n = 1.95 11
μ=-0.413 2
Δ<r2>(relative to 86Kr) is 0.811 from collinear fast beam laser spectroscopy (1995Ke04); uncertainties are 0.004 (statistical), 0.023 (with systematic error in voltage calibration), 0.151 (total error, including uncertainty in evaluation from isotope shifts).
E(level): Δ<r2>(relative to 86Kr) is 0.811 from collinear fast beam laser spectroscopy (1995Ke04); uncertainties are 0.004 (statistical), 0.023 (with systematic error in voltage calibration), 0.151 (total error, including uncertainty in evaluation from isotope shifts). From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
Jπ(level): J=1/2 from collinear fast beam laser spectroscopy (1995Ke04); π=+ from comparison of μ with Schmidt values. μ is only about 22% of the single-particle value, but 1995Ke04 attribute this to quenching resulting from configuration mixing. Configuration=(ν s1/2) is expected for near-spherical nuclei immediately above the n=56 sub-shell closure (1995Ke04).
   117.45(3/2+)   E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
   354.85(7/2+) 10 ns 2  E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
Jπ(level): log ft<5.9 is a little low for a first-forbidden transition; this may result from an incomplete decay scheme (≈21% of the photon intensity observed in 93Br β- decay is unplaced).
   359.46(3/2+,5/2+)   Jπ(level): log ft<5.9 is a little low for a first-forbidden transition; this may result from an incomplete decay scheme (≈21% of the photon intensity observed in 93Br β- decay is unplaced).
   710.10(3/2,5/2+)   Jπ(level): log ft<5.9 is a little low for a first-forbidden transition; this may result from an incomplete decay scheme (≈21% of the photon intensity observed in 93Br β- decay is unplaced).
   983.3(11/2+)   E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
  1517.0(15/2+)   E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
  2401.8(19/2+)   E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.
  3199.9(23/2+)   E(level): From 2010Hw03; uncertainty unstated by authors. π=+ SEQUENCE.

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Additional Gamma Comments:

E(level)E(gamma)Comments
   117.45   117.4M(γ): d from α(K)exp in 93Br β- decay; Δπ=no based on shell-model (2000PfZZ); analogy to n=57 isotone 97Zr and n=59 nuclides 99Zr and 97Sr.
   354.85   237.4M(γ): M1 or E2 from β- decay; ΔJ=2 from level scheme.
   983.3   628.4E(γ): From 2010Hw03; uncertainty unstated by authors.
  1517.0   533.7E(γ): From 2010Hw03; uncertainty unstated by authors.
  2401.8   884.8E(γ): From 2010Hw03; uncertainty unstated by authors.
  3199.9   798.1E(γ): From 2010Hw03; uncertainty unstated by authors.

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